diff --git a/lib/util.js b/lib/util.js
index b1e2175..3bfe1b9 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -527,6 +527,7 @@ function sanitizeShellString(str) {
       s[i] === '\n' ||
       s[i] === '\'' ||
       s[i] === '`' ||
+      s[i] === ' ' ||
       s[i] === '"')) {
       result = result + s[i];
     }